27144120777 has 16 divisors (see below), whose sum is σ = 36753384192. Its totient is φ = 17815778640.

The previous prime is 27144120767. The next prime is 27144120797. The reversal of 27144120777 is 77702144172.

It is not a de Polignac number, because 27144120777 - 2⁷ = 27144120649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27144120767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321402 + ... + 396972.

It is an arithmetic number, because the mean of its divisors is an integer number (2297086512).

Almost surely, 2^27144120777 is an apocalyptic number.

It is an amenable number.

27144120777 is a deficient number, since it is larger than the sum of its proper divisors (9609263415).

27144120777 is a wasteful number, since it uses less digits than its factorization.

27144120777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77428.

The product of its (nonzero) digits is 153664, while the sum is 42.

The spelling of 27144120777 in words is "twenty-seven billion, one hundred forty-four million, one hundred twenty thousand, seven hundred seventy-seven".